Expression bodied members were introduced in C# 6.0. You can read more about those here

C# 7.0 introduced more stuff like accessors, finalizer’s and constructors as expression bodied members

Expression Bodied Syntax for constructors

public CSharp7Features(string someData) => Console.WriteLine("Constructor called with {0} in c# 7 feature", someData);

Expression Bodied Syntax for Finalizers

~CSharp7Features() => Console.WriteLine("Finalizer called using C# 7 feature");

Expression Bodied Syntax for Accessors

float someDataMember;

public float SomeDataMember { get => someDataMember; set => someDataMember = value; }

All code samples are available at my GitHub profile

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